记录一下android自带颜色。
Constants
public static final int BLACK
Added in API level 1
Constant Value: -16777216 (0xff000000) 
public static final int BLUE
Added in API level 1
Constant Value: -16776961 (0xff0000ff) 
public static final int CYAN
Added in API level 1
Constant Value: -16711681 (0xff00ffff) 
public static final int DKGRAY
Added in API level 1
Constant Value: -12303292 (0xff444444) 
public static final int GRAY
Added in API level 1
Constant Value: -7829368 (0xff888888) 
public static final int GREEN
Added in API level 1
Constant Value: -16711936 (0xff00ff00) 
public static final int LTGRAY
Added in API level 1
Constant Value: -3355444 (0xffcccccc) 
public static final int MAGENTA
Added in API level 1
Constant Value: -65281 (0xffff00ff) 
public static final int RED
Added in API level 1
Constant Value: -65536 (0xffff0000) 
public static final int TRANSPARENT
Added in API level 1
Constant Value: 0 (0x00000000) 透明的看不到
public static final int WHITE
Added in API level 1
Constant Value: -1 (0xffffffff) 
public static final int YELLOW
Added in API level 1
Constant Value: -256 (0xffffff00) 